<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>css选择器</title>
    <link rel="stylesheet" href="../build/css/css选择器.css">
    <style>
        div{
            background: yellow;
        }
    </style>
</head>
<body>
<div class="box">
    <div class="container">

    </div>
</div>
</body>
</html>